I know I'm a Starbucks Head but..... It's happened to me 2 or 3 times already. Whenever it does, I usually get my drinks for free. They say it's a technical difficulty. The system is confused . That is, aside from the fact that I'm always in Starbucks getting a drink or redeeming my points. Time to buy some stocks in Starbucks. Did I mention that I'm a Starbucks gold card member?